1. Hot bath to loosen the skin.
2. Pull o u t w a rd, away from body.
3. Try to get fingers inside (pinky) and stretch out to widen opening.
4. With erection pull back to use head for stretching. Pull back only until it becomes painful. Get it to a point where it is tight and perhaps squeeze penis to expand the head for extra o u t w a rd stretching.
Be careful not to get it stuck behind the head.